CVSS v3.x: 6.1 (Medium)
- >= 1.4.4
There is a possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer. This is due to an incomplete fix of CVE-2022-32209.
- Versions affected: ALL
- Not affected: NONE
- Fixed versions: 1.4.4
A possible XSS vulnerability with certain configurations of Rails::Html::Sanitizer may allow an attacker to inject content if the application developer has overridden the sanitizer’s allowed tags to allow both "select" and "style" elements.
Code is only impacted if allowed tags are being overridden using either of the following two mechanisms:
- Using the Rails configuration
# In config/application.rb config.action_view.sanitized_allowed_tags = ["select", "style"]
- Using the class method
# class-level option Rails::Html::SafeListSanitizer.allowed_tags = ["select", "style"]
All users overriding the allowed tags by either of the above mechanisms to include both "select" and "style" should either upgrade or use one of the workarounds immediately.
NOTE: Code is not impacted if allowed tags are overridden using either of the following mechanisms:
:tagsoption to the Action View helper method
:tagsoption to the instance method
Remove either "select" or "style" from the overridden allowed tags.